C3 Scalable THz Transceiver Impairment Model

• Applicants: Professor Dr.-Ing. Ingmar Kallfass; Professor Dr.-Ing. Christoph Scheytt; Professor Dr. Thomas Schneider
• Subject Area: Communication Technology and Networks, High-Frequency Technology and Photonic Systems, Signal Processing and Machine Learning for Information Technology
• Term: since 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 403579441

We combine the measurement and modeling results from sub-projects A3, B2 and B3 in phase 1 and use them to compose a comprehensive model of the THz transmitter, the THz receiver, and ultrabroadband sampling. The model will include all major impairments such as RF bandwidth, amplifier and mixer non-linearities, additive noise, LO phase noise, sampling jitter, sampling bandwidth, effective resolution etc. The model will be implemented in Matlab/Simulink and Keysight ADS and shall allow co-simulation with ADS and Simulink, while we will also investigate the tradeoffs between time and frequency resolution and computational efficiency. Measurements from transceiver experiments, experiments with electronic and optoelectronic frequency synthesizers, as well as electronic and optical sampling experiments will be used to calibrate the simulation model in order to be able to quantify the impairments and to assess transceiver performance based on realistic figures. After the calibration of the simulation model with measurement results it will be handed over to sub-projects on system level (C1, C2) and to sub-project T. We will also use the parameterized transceiver impairment model to systematically study the influence of the different impairments on EVM and BER, depending on overall system parameters such as RF bandwidth, modulation schemes, Baud rate, sampling rate etc.

• DFG Programme: Research Units
• Subproject of: FOR 2863: Metrology for THz Communications